Snooker’s greatest prize is up for grabs in Sheffield as the city plays host to 17 days of slow-burning tension and drama with 32 of the world’s finest players going head-to-head for the 2013 World Championship trophy.

Last year’s winner Ronnie O’Sullivan returns to the Crucible Theatre to defend his title, marking his high-profile comeback to the sport following self-imposed break, and is among the favourites for glory despite having played just one competitive match since his Sheffield triumph last May.

BBC Sport and British Eurosport will have comprehensive coverage of the 2013 Betfair World Championship across all platforms, with the tournament starting in Sheffield on Saturday, April 20, running until May 6.

British boxing superstar Amir ‘King’ Khan’s first fight in the UK in two years will be screened exclusively live on BoxNation.

The Bolton fighter, a former unified IBF and WBA Super World Light-Welterweight champion, takes on Julio ‘The Kidd’ Diaz, himself a former world champion, on Saturday, April 27, at the Motorpoint Arena in Sheffield.

In addition to Khan’s BoxNation debut, Golden Boy Promotion’s Sheffield bill also includes Team GB Olympian Anthony Ogogo making his professional debut, as will Khan’s brother Haroon.

BBC Sport’s full line-up of presenters and commentary teams for the London 2012 Olympic Games.

Leading figures from the world of sport such as Sir Steve Redgrave, Michael Johnson, Denise Lewis and Tim Henman are joined by household names from BBC television, including Gary Lineker, Clare Balding, Sue Barker, Barry Davies, Jake Humphrey and Matt Baker.

Channel 4 has confirmed its on-screen line-up for the forthcoming IAAF World Athletics Championships in Daegu, South Korea.

Four-time Olympic gold-medallist athlete Michael Johnson will be part of a winning line-up of sporting greats hosting the channel’s live and exclusive coverage of the IAAF World Athletics Championships.

The world-famous, nine-time world champion, who is also a regular BBC pundit, will join main presenter Ortis Deley on the flagship programme to give his views on the action from the track.